Hi, I found a very unexpected behavior with r29217:
% cat ~/.openmpi/mca-params.conf #pml_base_verbose=0 pml_base_verbose=0 % mpicc -o helloworld helloworld.c Then if i update the mca-params.conf to have two identical entries, i have segfaults: % cat ~/.openmpi/mca-params.conf pml_base_verbose=0 pml_base_verbose=0 % mpicc -o helloworld helloworld.c [node0:23157] *** Process received signal *** [node0:23157] Signal: Segmentation fault (11) [node0:23157] Signal code: Address not mapped (1) [node0:23157] Failing at address: 0x7f4812770100 ^C Note that the compilation hangs. Also note that i have the exact same problem when running an MPI application that was successfully compiled: % cat ~/.openmpi/mca-params.conf pml_base_verbose=0 #pml_base_verbose=0 % mpirun -np 2 ./helloworld Hello, World (node0) Hello, World (node0) % mpirun -np 2 ./helloworld Hello, World (node0) Hello, World (node0) [node0:23201] *** Process received signal *** [node0:23201] Signal: Segmentation fault (11) [node0:23201] Signal code: Address not mapped (1) [node0:23201] Failing at address: 0x7f5a8f632c80 [node0:23202] *** Process received signal *** [node0:23202] Signal: Segmentation fault (11) [node0:23202] Signal code: Address not mapped (1) [node0:23202] Failing at address: 0x7f1436605650 ^C[node0:23199] *** Process received signal *** [node0:23199] Signal: Segmentation fault (11) [node0:23199] Signal code: Address not mapped (1) [node0:23199] Failing at address: 0x7f9917dd55f0 The problem occurs during opal_finalize() and MCA tries to clean up some variables. Sorry i did not have the time to get a full trace. Best regards,
